RDSS Transmit Power Adjustment With Coarse-Fine Control
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Solution Overview
Problem
Existing methods for adjusting transmit power in radio determination satellite systems (RDSS) face challenges in ensuring communication quality while avoiding excessive power consumption and interference, as they either fix the gain leading to signal quality fluctuations or require additional circuits for dynamic gain compensation.
Innovation Solution
A method involving a first module for coarse power adjustment and a second module for fine power adjustment, using assistance information and feedback to dynamically set transmit power thresholds, ensuring stable signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmit power is increased to ensure satellite reception, then communication reliability is improved, but power consumption increases and interference to surrounding devices is caused
Solution Approach 1:
The patent implements dynamic transmit power adjustment by dividing power control into coarse adjustment (first module) and fine adjustment (second module). The system continuously monitors signal quality and adaptively changes transmit power levels, transitioning from static high power to dynamic optimized power, thereby reducing power consumption while maintaining communication reliability.
Solution Approach 2:
The patent changes the power parameter dynamically by introducing two adjustable power levels (first power level and second power level) that are higher than the minimum threshold. The system switches between these power levels based on communication conditions, optimizing the balance between reliability and power consumption without causing excessive interference.
2Device complexity
If RDSS gain is fixed to simplify the system, then device complexity is reduced, but signal quality is severely affected when environment changes
Solution Approach 1:
The patent introduces dynamic gain adjustment mechanisms (first gain and second gain) that adapt to environmental changes. The system monitors signal quality indicators and adjusts RDSS gain accordingly, ensuring signal quality is maintained in varying environments without requiring complex additional circuits for full dynamic compensation.
Solution Approach 2:
The patent segments the gain adjustment into two distinct stages: coarse gain adjustment (first gain) and fine gain adjustment (second gain). This segmentation allows the system to handle different levels of signal quality requirements separately, maintaining signal quality while controlling system complexity through modular adjustment stages.
3Reliability
If additional circuits are added for dynamic gain compensation, then signal quality is maintained, but chip complexity and circuit area increase
Solution Approach 1:
The patent divides dynamic gain compensation into two separate adjustment stages (coarse adjustment and fine adjustment) that can be implemented using existing circuit structures. This segmentation allows signal quality maintenance through progressive adjustment without requiring a complete complex dynamic compensation circuit, thereby controlling chip complexity and circuit area.
Solution Approach 2:
The patent implements partial dynamic compensation through two-stage adjustment rather than full continuous compensation. This partial action approach maintains signal quality for most practical scenarios while avoiding the full complexity of continuous dynamic gain compensation circuits, achieving a practical balance between signal quality and circuit complexity.
Data Source
AI summary
A transmit power adjustment method includes obtaining a first signal sequence, where the first signal sequence includes a valid signal sequence; controlling a first module and a second module to adjust transmit power of the first signal sequence; and sending the first signal sequence. The first module is configured to coarsely adjust the transmit power of the first signal sequence. The second module is configured to finely adjust the transmit power of the first signal sequence. After obtaining the first signal sequence, a transmitter may steadily adjust the transmit power of the first signal sequence by using the first module and the second module, and correspondingly send the valid signal sequence in the first signal sequence when the transmit power reaches the first transmit power threshold and/or the second transmit power threshold.